All Oracle Error Codes
Oracle DBA Forum

Frequent Oracle Errors

TNS:could not resolve the connect identifier specified
Backtrace message unwound by exceptions
invalid identifier
PL/SQL compilation error
internal error
missing expression
table or view does not exist
end-of-file on communication channel
TNS:listener unknown in connect descriptor
insufficient privileges
PL/SQL: numeric or value error string
TNS:protocol adapter error
ORACLE not available
target host or object does not exist
invalid number
unable to allocate string bytes of shared memory
resource busy and acquire with NOWAIT specified
error occurred at recursive SQL level string
ORACLE initialization or shutdown in progress
archiver error. Connect internal only, until freed
snapshot too old
unable to extend temp segment by string in tablespace
Credential retrieval failed
missing or invalid option
invalid username/password; logon denied
unable to create INITIAL extent for segment
out of process memory when trying to allocate string bytes
shared memory realm does not exist
cannot insert NULL
TNS:unable to connect to destination
remote database not found ora-02019
exception encountered: core dump
inconsistent datatypes
no data found
TNS:operation timed out
PL/SQL: could not find program
existing state of packages has been discarded
maximum number of processes exceeded
error signaled in parallel query server
ORACLE instance terminated. Disconnection forced
TNS:packet writer failure
see ORA-12699
missing right parenthesis
name is already used by an existing object
cannot identify/lock data file
invalid file operation
quoted string not properly terminated

Re: [suse-oracle] Oracle8i finalpatch

Paul Foerster


Hi Reinhold, hi Frank,

On 03. Feb, 2005, at 17:43, Frank Grote wrote:
> What's about "sqlplus internal"?

... no. The correct syntax is sqlplus "/ as sysdba". The use of both
"svrmgrl" and the pseudo user "internal" is deprecated from versions 8i
and newer. The quoting of the "/ as sysdba" part is operating system
dependant and may vary from OS to OS. You might end up with one of the
following (not complete) list:

sqlplus "/ as sysdba"
sqlplus '"/ as sysdba"'
sqlplus "'/ as sysdba'"

It depends on how the shell interprets the parameters and quotes.

Or you can obviously do

Username: / as sysdba

> Listener is running?

... internal or sysdba connects do not use the listener unless you
provide the instannce name. In this case you'd need to do it this way
(quoting variations from above apply):

sqlplus sys@(protected)

Or, if you have a password file:

sqlplus "sys@(protected)"

The latter is also used with 9i which requires a password file if you
intend to do an SQL*Net connect, ie. use the listener.

Hope this helps.


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